It indicates that innovating and translationof our solar technology have new evolution. It will impel our economy, society, environment and energy construction.
I just started the translation—it is too long for me to finish because of lack of time and energy. Let me recite a short story for you.
还只译了开头几段，很长，看样子没有时间和精力译完。就给你背个短篇吧。
3
From the principle of symmetry, law of conservation ofenergy is proved. And have a simple geometric express for time translation symmetry and conservation ofenergy.